Brake.



R. PAULSON.

BRAKE. .Armcmon man Aue.27. win.

'1 ,259,77 1 Patented Mar. 19,1918.

2 SHEETS-SHEET!- Inventor:

a. Mupsou;

BRAKE. QFPLICATION FILED 1116.21. 19"- Patented Mar. 19, 1918.

2 SHEETS-SHEET 2.

frwe 72607" Rudolf Faulaon.

wLa

BUDOLF PAULSON, F FOXBORO, MASSACHUSETTS.

BRAKE.

To all whom it may concern:

Be it known that l, Runonr PAULSON, a citizen of the United States, residing'at Foxboro, in the county of Norfolk and State of Massachusetts, have invented new and useful Improvements in Brakes, of which the. following is a specification.

This invention relates to improvements in brakes for motorvehicles and is particularly,

though not exclusively, adapted for use in connection with the type of motor vehicle known as the Ford. V

The object of the intention is to provide a powerful and durable brake adapted to be operated upon drums attached to the rear wheels of the vehicle from means disposed adjacent the operators seat.

Another object of the invention is toprovide a device of the nature described adapt- ,ed to be quickly and easily applied to either [new or old machines. w The invention consists in the combination arrangement of parts set forth in the following specification and particularly pointed out in the claims.

6 Referring to the drawings:

Figure 1 is a plan view of portions of a motor vehicle, namely, the rear axle and the pjortion of the engine casing to which the brake mechanism is connected.-

,Fig. 2 is a vertical'section through the rear axle of the motor vehicle with the brake mechanism for one wheel and its operating means shown inelevation. Fig. 3 is a detail side elevation of the brake band contracting means.

Fig. 4 is a detail view of the brake band support. Like numerals refer to like parts through;

out the several views of the drawings. a .In the drawings, 1 represents the rear axle mechanism of a motor vehicle, preferably of the type known as the Ford automo bile, portions of said mechanism .being threaded at 26 for a substantial portion of its length, the screw threaded portion being,

broken away to save space in the drawings The present adaptation of the invention to the type of vehicle embodying a rear axle housing 2- which is a hollow franie'incasirfg the moving parts of the reap/axle. This housing extends'from one rear wheel to the other, which areindicated in'part at 3, 3. ,Each of the wheels 3 is provided with a brake drum 4 secured by bolts. 5 to said wheel The housing 2 is braced by radius rods 6., 6 which are secured. by screws 7, 7

,to disks 8, 8 at opposite ends of said,hous- 'ing, said radius rods extending forwardly Specification of Letters Patent.

justed to either new or old machines.

Patented Mar. 193L918.

Application filed August 27, 1917. Serial No. 188,512.

to the front end of the driving shaft 2 not shown in the drawings.

The gripping means for the drums l, 1 preferably embody. in their. construction brake bands 9, 9 which surround said'drums and are provided with brake linings 10 of suitable material which engage the exterior surface of said drums; Secured to one end of each of said brake bands is a bracket 11 having an elongated eye 12,.the long diameter of which is radially disposed with respect to said brake drum, said eye being adapted-to receive the end of a shaft 13 disposed with-its axis substantially parallel with the axis of the rear axle and of each of the drums 4, 4, said shaft 13 extending from one end of the housing 2 tothe' iother. The elongated eye 12 of the bracket 11 is ment of said brake band on said drum, but permits said band to movea'adially' of said drum so as to adjust itself properly with respect to said drum during the rotation of the same. The shaft. 13 is journaled to'rock in brackets lat and 15 which are preferably .respectively clamped to the radius rods 6 adjacent to opposite ends of the housing 2, sald brackets being secured by plates 16 and screws 17, whereby said brackets may be ad- The brackets lt and lfi have'bearing members 18 which receive the shaft 13, said bearing 'members being disposed at slight distances from the brackets 11, while the shaft 13 proects beyond said bearing members 18 these distances, and to said shaft, upon these projecting portions, are secured arms 19 and pivotally connected at 20 to the free end of each of the arms 19 is a link 21,, in turn piv otally connected to one endof a lever The opposite end of said lever 22 is pivoted at 23 upon the bracket 11.

Pivoted at a point 24- to the, lever 22 intermediate of its ends is a link 25 screw adapted to prevent a circumferential ,moveinserted through a hole 27in a bracket 28 secured by rivets or other suitable means to the opposite end of the-brake band 10 which terminates adjacent to the end to which the p said link and yieldingly separates the ends of the brak band 10. The tension of the spring 29 may be adjustedb'y means of a nut 31, engaging said link and the opposite a face of the bracket 28 from that engaged by case being broken away to save space in the drawings.

Detachably secured to said pedal32 is a clamp 33 having an eye 34: to which .one end of an adjustable lint: 35 is connected. The opposite end of said link is attached to an arm 36 secured, in turn, to the shaft 13 intermediate of the bearing members l8, 18 of the brackets 1i and 15. The shaft 13 is supported adjacent to the arm 36, so as to prevent any undue deflection thereof, by an adjustable support or brace 3'? having a bearing 38 detachably connected with said shaft, the opposite end of said support being detachably secured to the housing 2.

The portion of said support engaging said housing and that engaging said shaft 13 are in separate sections 39 and 40 respectively which have overlapping ends secured together by bolts 41. Slots &5, in one "of said sections permit said sections to be moved longitudinally with respect to eacli.

other when the brake mechanism is being adapted to the running gear of a motor vehicle. I I

It is essential that the brake band 10 be supported in such a manner that it will drag but very lightly upon the brake-drum when the brake is not in use and to accomplish this result a lug i2 is attached to the brake band 10 on the opposite side fof the housing 2 from that at which the shaft 13 is located and this lug engages a fixed arm l?) secured to the end of the housing 2 adjacent to the brake, one of these-being provided for each brake band.

The general operation of the device hereinbefore specifically described is as follows:

Pressure is applied to the pedal to rock the same and the rocking movement thereof transmits, through the link 35 and arm 36, a V

rocking movement to the shaft 13 in the bearings 18. This rocking movement is further transmitted, through the arms 19,

. attached at opposite ends of said shaft, by

means of links 21, to levers 22, and these levers cooperate to simultaneously contract, through the links 25, the brake bands 10 surroundingthe drums 4, thereby producing a gripping action upon both drums at the same time.

, Upon releasing the pressure on the pedal 32 the springs 29 act to separate the ends of the brake bands and thus release the drums. The arrangement of the-several levers and links is such as to provide a very powerful action at a very small expenditure of energy on the pedal 32.-

Furthermore, the construction of the various supporting members of the device render the attachment thereof to the vehicle very easy and not only to the particular type of vehicle described but to other types having parts suitable to support the brackets 14:, 15 and 37. z

Having thus specifically described my invention what I claim and desire by Letters Patent to secure is:

l. A brake mechanism having, in com bination, a brake drum, a band adapted to engage said drum, a shaft,means for manually rocking said shaft, a bracket secured to one end of said band and engaging said shaft, adapted to prevent circumferential movement of said band, said bracket having a slot-adapted to receive said shaft and,

with the opposite end of said band, adapted I to contract said band.

2. The combination with a pair of relatively rotatable drums, of .a rear axle housing interposed between said drums, a shaft extending longitudinally of said rear axle housing, brackets for said shaft detachably arrangedadjacent to opposite ends of said rear axle housing, hands adapted to engage said drums, a support for said shaft inter-- posed between said brackets and adjustable radially of said rear axle housing, means operatively connecting said shaft with said band, and means attached to said shaft adjacent to said support, adapted to impart a rocking movement to said shaft.

3. A brake mechanism having, in combination, a' pair of drums, a brake band engaging each of said drums, .a shaft extending from one of said drums to thsother, means for rockingsaid shaft, means on each of said bands adapted to engage the adjacent ends of said shaft to prevent circumferential movement of said bands on said drums, an arm secuned to each end of said shaft, levers attached respectively to the ends of said bands which have connection with said my hand in presence of two subscribing witnesses.

nunoLF PAULSON.

Vitnesses,

SYDNEY E. TAFT, LEONARD A. POWELL. 

